发明授权
US07860255B2 Content distribution server, key assignment method, content output apparatus, and key issuing center 失效
内容分发服务器,密钥分配方法,内容输出设备和密钥发放中心

Content distribution server, key assignment method, content output apparatus, and key issuing center
摘要:
A content distribution system distributes contents. The content distribution system includes a key issuing center, a server, eight output apparatuses, and a communication path that connects them to each other. The key issuing center and each of the output apparatuses are previously given an individual key shared between them. For example, the key issuing center shares individual key IKa with an output apparatus, individual key IKb with an output apparatus, and individual key IKh with an output apparatus.
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